Cho Gyeong-chul Observatory with star trails, Gangwon Province, South Korea

Cho Gyeong-chul Observatory with star trails, Gangwon Province, South Korea

© Multi-bits/ImaZinS/Getty Images

Cho Gyeong-chul Observatory with star trails, Gangwon Province, South Korea

Cho Gyeong-chul Observatory with star trails, Gangwon Province, South Korea

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